<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>vue购物车</title>
      <link href="https://cdn.bootcss.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet">    </head>
    <body>
        <div id="app"></div>
    </body>
</html>
